A kind of preparation method of spherical alumina
A spherical alumina and aluminum hydrogen technology, which is applied in the preparation of alumina/hydroxide, chemical instruments and methods, aluminum compounds, etc., can solve the problems of large heat consumption, dust, ammonia gas, etc., and achieve low heat consumption , easy operation, low heat loss effect
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Embodiment 1
[0019] Disperse 100g of SB powder from Sasol Company in 300g of 1% nitric acid solution, and stir for 1h. Add ammonia water to the above feed solution, adjust the pH value to 7-8, and stir evenly. The above-mentioned feed solution was heated to 60° C., 100 g of 60° C. 5% agar solution was added, and stirred evenly. Use a drip nozzle with an inner diameter of 1.2mm (wall thickness 0.2mm) to drop the above-mentioned feed solution into an oil column at 10°C (the oil layer is 3% white oil, and the height of the oil layer is 100cm). The formed pellets were taken out, dried at 60°C for 1 hour, and then washed with 5 times of water. After washing, the pellets were dried at 100°C and calcined at 600°C. The performance indicators of spherical alumina are shown in Table 1.
[0020] The performance index of spherical alumina in the embodiment 1 of table 1
[0021]
Embodiment 2
[0023] Disperse 100g of high-purity pseudo-boehmite from Zibo Baida Chemical Co., Ltd. in 300g of 1% nitric acid solution, and stir for 1 hour. Add ammonia water to the above feed solution, adjust the pH value to 7-8, and stir evenly. The above-mentioned feed solution was heated to 60° C., 100 g of 60° C. 5% agar solution was added, and stirred evenly. Use a drip nozzle with an inner diameter of 1.2mm (wall thickness 0.2mm) to drop the above-mentioned feed solution into an oil column at 10°C (the oil layer is 3% white oil, and the height of the oil layer is 100cm). The formed pellets were taken out, dried at 60°C for 1 hour, and then washed with 5 times of water. After washing, the pellets were dried at 100°C and calcined at 600°C. The performance index of spherical alumina is shown in Table 2.
[0024] The performance index of spherical alumina in table 2 embodiment 2
[0025]
[0026]
Embodiment 3
[0028] Disperse 100g of SB powder from Sasol Company in 300g of 1.5% nitric acid solution and stir for 1h. Add ammonia water to the above feed solution, adjust the pH value to 7-8, and stir evenly. The above-mentioned feed solution was heated to 60° C., 100 g of 60° C. 5% agar solution was added, and stirred evenly. Use a drip nozzle with an inner diameter of 1.2mm (wall thickness 0.2mm) to drop the above-mentioned feed solution into an oil column at 10°C (the oil layer is 3% white oil, and the height of the oil layer is 100cm). The formed pellets were taken out, dried at 60°C for 1 hour, and then washed with 5 times of water. After washing, the pellets were dried at 100°C and calcined at 600°C. The performance index of spherical alumina is shown in Table 3.
[0029] The performance index of spherical alumina in the embodiment 3 of table 3
[0030]
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